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FORM 10-Q
EXHIBIT 10.1
EXHIBIT 10.2
EXHIBIT 31.1
EXHIBIT 31.2
EXHIBIT 32.1
EXHIBIT 32.2
Estimated Fair Value of Notes Based on Quoted Market Prices (Details) (USD $)
In Millions
Sep. 30, 2011
Dec. 31, 2010
Senior Notes Due 2022 [Member]
Fair Value Assets And Liabilities Measured On Recurring Or Nonrecurring Basis Disclosure Items [Line Items]
Fair value of debt
$ 741
$ 0
6.625% Senior Subordinated Notes due 2014 [Member]
Fair Value Assets And Liabilities Measured On Recurring Or Nonrecurring Basis Disclosure Items [Line Items]
Fair value of debt
327
333
6.625% Senior Subordinated Notes due 2016 [Member]
Fair Value Assets And Liabilities Measured On Recurring Or Nonrecurring Basis Disclosure Items [Line Items]
Fair value of debt
557
568
7.125% Senior Subordinated Notes due 2018 [Member]
Fair Value Assets And Liabilities Measured On Recurring Or Nonrecurring Basis Disclosure Items [Line Items]
Fair value of debt
630
626
6.875% Senior Subordinated Notes due 2020 [Member]
Fair Value Assets And Liabilities Measured On Recurring Or Nonrecurring Basis Disclosure Items [Line Items]
Fair value of debt
$ 735
$ 733